Peter Quinn was appointed the 16th headmaster in 2013. His appointment was a homecoming to Peddie, where he had served as a teacher, coach, dorm supervisor, college counselor, and admission director between 1985 and 1996. Quinn oversaw the Peddie admission office in the years immediately following the school's $100 million gift from Walter H. Annenberg '27. He was noted for his focus on Peddie’s mission during the transformative years when the Annenberg scholarship program was created and applications to the school tripled.
Immediately prior to his return to Peddie, Quinn was the headmaster of Wakefield School in Virginia for seventeen years. He is credited with vastly improving the school by increasing enrollment, faculty and staff, acreage, playing fields, and infrastructure. He has also taught at the Hackley School.